公元后的英文：
in the Christian era

Christmas is an important feast for Christians.
圣诞节是基督徒的重要节日。

I believe in Christianity.
我信仰基督教 。

The book was not intended to be an attack on Christianity.
这本书的本意不是攻击基督教的。

Christians go to church on Sundays.
基督教徒每个星期日到教堂去做礼拜。

He is an apostate from Christianity.
他是一个基督教的背信者。

We live in an era of rationality.
我们生活在理性的时代。

A new era is dawning.
一个新的时代开始出现了。

It's the end of an era.
这是一个时代的终结。

He was untimely born in this era.
他不逢时地生在这个时代。

He is the preeminent tenor of the modern era.
“他是现代杰出的男高音”